期刊：Aquatic Toxicology
主題：銀銅納米顆粒對斑馬魚胚胎側線毛細胞的毒性作用
標題：Toxic e?ects of silver and copper nanoparticles on lateral-line hair cells of
zebra?sh embryos
影響因子：3.794
檢測指標：Ca2+流速
檢測部位：斑馬魚胚胎側線毛細胞
Ca2+流速流實驗處理方法：
斑馬魚胚胎在受精后0-96 h（hpf），0, 0.9, 9.3, 27.8 μM的AgNPs，和0,0.16,1.6，15.8μM的CuNP分別進行處理
Ca2+流速流實驗測試液成份：
0.5mM NaCl, 0.2mM CaSO4, 0.2mM MgSO4, 0.16mM KH2PO4, and 0.16mM K2HPO4 (pH 7.0)，300μM MOPS，0.1 mg/l tricaine
作者：臺灣師范大學林豊益、Hsiu-Ju Yen
英文摘要
The potential toxicity of nanoparticles (NPs) to the early stages of fish is still unclear. In this study, we investigated the toxic effects of silver (AgNPs) and copper nanoparticles (CuNPs) on lateral-line hair cells of zebrafish embryos.
Zebrafish embryos were incubated in different concentrations of AgNPs and CuNPs at 0?96?h post-fertilization (hpf). Both AgNPs and CuNPs were found to cause toxic effects in zebrafish embryos in a dose-dependent manner. Values of the 96-h 50% lethal concentration (LC50) of AgNPs and CuNPs were 6.1?ppm (56.5?μM) and 2.61?ppm (41.1?μM), respectively.
The number of FM1-43-labeled hair cells and the microstructure of hair bundles were significantly impaired by AgNPs [≥1?ppm (9.3?μM)] and CuNPs [≥0.01?ppm (0.16?μM)]. Ca2+ influxes at hair bundles of hair cells were measured with a scanning ion-selective microelectrode technique to evaluate the function of hair cells.
AgNPs [≥0.1?ppm (0.9?μM)] and CuNPs [≥0.01?ppm (0.16?μM)] were both found to significantly reduce Ca2+ influxes. Similar toxic effects were also found in hatched embryos subjected to 4?h of exposure (96?100?hpf) to AgNPs and CuNPs. This study revealed that lateral-line hair cells of zebrafish are susceptible to AgNPs and CuNPs, and these contaminants in aquatic environments could pose a threat to fish survival.
中文摘要（谷歌機翻）
納米粒子（NPs）對魚類早期的潛在毒性尚不清楚。在這項研究中，我們研究了銀（AgNPs）和銅納米顆粒（CuNPs）對斑馬魚胚胎側線毛細胞的毒性作用。
在受精后0~96h（hpf），將斑馬魚胚胎在不同濃度的AgNPs和CuNPs中孵育。發現AgNPs和CuNPs都以劑量依賴的方式對斑馬魚胚胎產生毒性作用。 AgNPs和CuNPs的96小時50％致死濃度（LC50）的值分別為6.1ppm（56.5μM）和2.61ppm（41.1μM）。
AgNPs [≥1ppm（9.3μM）]和CuNPs [≥0.01ppm（0.16μM）]顯著損害了FM1-43標記的毛細胞數量和發束的微觀結構。用掃描離子選擇性微電極技術測量毛細胞發束處的Ca2+流入，以評估毛細胞的功能。
發現AgNPs [≥0.1ppm（0.9μM）]和CuNPs [≥0.01ppm（0.16μM）]均可顯著降低Ca2+流入量。在孵化4h（96?100hpf）的AgNPs和CuNPs孵化的胚胎中也發現了類似的毒性效應。這項研究表明，斑馬魚的側線毛細胞對AgNPs和CuNPs敏感，這些污染物在水生環境中可能對魚類的存活構成威脅。
結果表明：在經歷96小時AgNP或CuNP處理的胚胎中也發現了毛細胞的功能損傷。使用NM測量L1神經瘤的毛細胞的Ca2+流入量（圖A），在0.1,1和3ppm（0.9,9.3和27.8μM）的AgNP組中，Ca2+流入量顯著減少26％，46％和91％（圖B）。在0.01 ppm（0.16μM）CuNP組中，Ca2+流入量減少了38％，而在0.1和1 ppm（1.6和15.8μM）CuNP組中，Ca2+流入幾乎檢測不到（圖C）
聯盟專家暨本文作者介紹
林豊益，博士，教授。臺灣師范大學生命科學學院生理組，主要從事魚類環境生理、水生環境毒理、機械性感覺生理、斑馬魚疾病模式與藥物篩選研究。
近期代表性成果
Lin, L. Y., Y. H. Yeh, G.Y. Hung, C. H. Lin, P. P. Hwang, J. L. Horng. 2018. Role of calcium-sensingreceptor in mechanotransducer-channel-mediated Ca2+ influx in hair cells ofzebrafish larvae. Front. Physiol. 649:9. L. Horng, L. L. Yu, S. T. Liu, P. Y. Chen, L. Y. Lin. 2017. Potassiumregulation in medaka (Oryzias latipes) larvae acclimated to fresh water:passive uptake and active secretion by the skin cells. Sci. Rep. 7, 16215. Liu, S. T., J. L. Horng, P. Y. Chen, P. P. Hwang, L.Y. Lin. 2016. Saltsecretion is linked to acid-base regulation of ionocytes in seawater-acclimatedmedaka: new insights into the salt-secreting mechanism. Sci. Rep. 6, 31433. Horng, J. L., P. L. Chao, P. Y. Chen, T. H. Shih, L.Y. Lin. 2015.Aquaporin 1 is involved in acid secretion by ionocytes of zebrafish embryosthrough facilitating CO2 transport. Plos One 10(8):e0136440. Lin, Y. H., G. Y. Hung, L. C. Wu, S. W. Chen, L. Y. Lin. J. L. Horng.2015. Anion exchanger 1b in sereocilia is required for the functioning ofmechanotransducer channels in lateral-line hair cells of zebrafish. Plos One10(2): e0117041.
洪君琳，博士，副教授。臺北醫學大學醫學院醫學科學研究所，斑馬魚模式核心服務實驗室主任，主要從事以斑馬魚為模式研究毛細胞功能及藥物影響的研究。 近期代表性成果
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Lin LY, et al,. Role of Calcium-Sensing Receptor in Mechanotransducer Channel Mediated Ca2+ Influx in Hair Cells of Zebrafish Larvae . frontiers in physiology .2018 ;(9):649
-
Hung Giun Yi, et al,. Incidence of immune thrombocytopenia in Taiwan: a nationwide population-based study . Transfusion .2018 ;(58):2712-2719
-
Horng JL, et al,. Potassium Regulation in Medaka (Oryzias latipes) Larvae Acclimated to Fresh Water: Passive Uptake and Active Secretion by the Skin Cells. . Sci Rep. .2017 ;(7):16215
-
Hung GY, et al,. Cancer in adolescents: Incidences and trends during 1995-2009 in Taiwan. . Cancer Lett .2016 ;(372):110-117
-
Hung GY, et al,. Changing incidence patterns of hepatocellular carcinoma among age groups in Taiwan . J Hepatol .2015 ;(63):1390-1396
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